Adjustable Dump Valve Twin Piston Atmospheric (TBV002.20A)
Adjustable Dump Valve Twin Piston Atmospheric (TBV002.20A)
Motorsport Adjustable Dump Valve Twin Piston Atmospheric (Silver)
Standard Range :- 0.5-1.2 Bar
Uprated Spring Range:- 1.3-3.0 Bar (Supplied in the box)
Available in Red,Black,Blue & Silver
Size Range:- 20,25,34mm
Dump valves are designed to vent unused pressure to atmosphere when the throttle has been released. When accelerating the turbo charger produces positive pressure which is used to supply the engine with large amounts of compressed air. When you lift the accelerator the throttle butterfly is closed and the boost has no escape route, so it backs up through the intercooler and causes back pressure that tries to prevent the turbo from spinning, this is known as compression stall.
By fitting a dump valve every time you release the throttle the excess boost pressure will be released which means a significant reduction in turbo 'lag', contributing towards faster pick up between gear changes. In extreme cases on cars with high revving engines or large turbochargers the shaft within the turbo has been known to snap when no form of dump valve has been used.
Couldn't load pickup availability
Authenticity Guaranteed
Satisfaction Guarantee
Secure Payments
Model Compatibility
Model Compatibility
Aston Martin DB9 2004-2016
Aston Martin Vantage 2005-2016
Audi A3 2004-2012
Audi A4 2004-2015
Audi A5 2007-2016
Audi S3 2006-2012
Audi S4 2004-2015
Audi S5 2007-2016
Audi TT 2006-2014
Audi TTS 2008-2014
Bentley Continental GT 2003-2016
BMW 1 Series 2004-2016
BMW 3 Series 2004-2016
BMW 5 Series 2004-2016
BMW M3 2004-2013
BMW M5 2004-2016
BMW Z4 2004-2016
Ferrari 360 Modena 1999-2005
Ferrari 360 Spider 1999-2005
Ferrari F430 2004-2009
Ferrari F430 Spider 2005-2009
Ferrari F430 Scuderia 2007-2009
Ferrari F430 Scuderia Spider 16M 2008-2009
Ferrari 458 Italia 2009-2015
Ferrari 458 Spider 2011-2015
Ferrari 488 GTB 2015-2019
Ferrari 488 Spider 2016-2019
Ferrari California 2008-2014
Ferrari California T 2014-2018
Ferrari F12 Berlinetta 2012-2017
Ferrari F12tdf 2016-2018
Ferrari FF 2011-2016
Ferrari GTC4Lusso 2016-2019
Ford Focus ST 2005-2010
Ford Focus RS 2009-2011
Ford Mustang 2011-2014
Jaguar F-Type 2013-2019
Lamborghini Gallardo 2003-2013
Lamborghini Gallardo Spyder 2006-2013
Lamborghini Huracan 2014-2019
Lamborghini Huracan Performante 2017-2019
Lamborghini Huracan Spyder 2015-2019
Lotus Elise S2 2001-2010
Lotus Exige S2 2004-2011
Maserati GranTurismo 2007-2019
Maserati GranCabrio 2010-2019
McLaren 570S 2015-2019
McLaren 650S 2014-2017
McLaren 675LT 2015-2017
McLaren 720S 2017-2019
McLaren MP4-12C 2011-2014
Mercedes-Benz A-Class 2004-2018
Mercedes-Benz C-Class 2004-2018
Mercedes-Benz CLA-Class 2013-2019
Mercedes-Benz E-Class 2004-2018
Mercedes-Benz S-Class 2004-2018
Mercedes-Benz SLK-Class 2004-2016
Mercedes-Benz SL-Class 2004-2015
Mercedes-Benz SLR McLaren 2003-2010
Mercedes-Benz SLS AMG 2010-2015
Mini Cooper S 2001-2013
Nissan 350Z 2003-2009
Porsche 911 2005-2019
Porsche 911 GT2 2007-2012
Porsche 911 GT3 2006-2011
Porsche 911 Turbo 2007-2019
Porsche Boxster 2005-2016
Porsche Cayman 2006-2016
Renault Clio RS 2006-2012
Renault Megane RS 2004-2016
Subaru Impreza WRX 2006-2014
Subaru Impreza STI 2006-2014
Volkswagen Golf GTI 2004-2013
Volkswagen Golf R 2009-2013
Volkswagen Polo GTI 2005-2017
Volkswagen Scirocco R 2009-2017
Part Number
Part Number
- OEM part number: TBV002.20A
- Equivalent part numbers: N/A
Shipping Information
Shipping Information
Standard shipping with tracking via Royal Mail or Evri for heavier parts:
- £4.99 per order for standard 2-day delivery
- £5.99 per order for Next Day delivery
Most orders are shipped the same business day if ordered before 2pm. We ship Monday through Friday.
If we unexpectedly run out of stock we may have to order your part which can take up to 1 week. We will be in touch in the rare circumstance that there is a delay to your shipment.
Returns Policy
Returns Policy
We want you to be completely happy with your purchase but please do not hesitate to contact us immediately if you have a problem with your order. Please ensure that you consider all the points described on our profile page accessible by clicking our name above the product title.
It is especially important that you take due care to ensure that the part you selected is compatible with your car. If in doubt, we'd prefer that you get in touch via our profile page so we can help you.